President Obama is a Christian. I will speak on his behalf.
John 5:42-44 Living Bible (TLB)
41-42 “Your approval or disapproval means nothing to me, for as I know so well, you don’t have God’s love within you. 43 I know, because I have come to you representing my Father and you refuse to welcome me, though you readily enough receive those who aren’t sent from him, but represent only themselves! 44 No wonder you can’t believe! For you gladly honor each other, but you don’t care about the honor that comes from the only God!